--  @testpoint:opengauss关键字release(非保留)，作为函数名

--关键字不带引号-成功
drop function if exists release;
create function release(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function release;
--关键字带双引号-成功
drop function if exists "release";
create function "release"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function "release";
--关键字带单引号-合理报错
drop function if exists 'release';
create function 'release'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `release`;
create function `release`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/